Safety device for elevators.



PATENTED APR. 28, 1908.

A. HOLLINGBR. SAFETY DEVICE FOR ELEVATORS.

APPLIOATION FILED MAY 4. 1907.

ANDREW HOLLINGER, OF CANTON, OHIO.

SAFETY DEVICE FOR ELEVATORS.

Specification of Letters Patent.

Patented April 28, 1908.

Application filed May 4, 1907. Serial No. 371,906.

To all whom it may concern:

\ Be it known that I, ANDREW HQLLINGER,

a citizen of theUnited States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvei'nents in Safety Devicesfor-Elcvators and I do hereby declare that the follow ing is "a full, clear, and exact description of the same, reference being had to the annexed drawing, making a part of this specification, and to the numerals and figures of reference marked thereon, in which Figure 1 is'a view showing thev door side of an elevator shaft and illustrating my improved device properly connected, showing the floor of an elevator cage stopped at the center door. Fig. 2 is a view showing a portion of an elevator door, the door locking plate and the cage locking member, and the door locking plate retaining springs detached from each other. Fig. 3 is a view showing a portion of the elevator cage door, the door ocking plate and the cage locking device in released position. Fig. i is a view showing the position of the door locking plate, after the cage has ascended and the position of the cage locking device. Fig. 5 is a transverse section of the door locking plate showing its spring in proper relative position.

The present invention has relation -to safety device for elevators, and it consists in the novel arrangement hereinafter described, and particularly pointed out in the claims."

Similar numerals of reference indicate corresponding parts in all the figures of the drawing. 1

In the accompanying drawing, 1 represents the elevator shaft, which is constructed in the usual manner. An elevator cage.is provided whicI s to be connected in the usual manner to hoisting devices, such as are common in elevators. The iloor 2 which constitutes the floor of the cage is shown, but no part of the cage is illustrated, owing to the fact that the cage within itself forms no part of the present invention. At the various floor levels of the building are pivotally at tached the door locking plates 3, which lock-- ing plates are provided with the recesses 4 and 5, said. recesses are located upon the opposite sides of the pivotal points of the doorocking plates 3 and are for the purpose hereinafter described. To the cage floor 2 is at tachcd the door locking plate operating pin 6, which pin is for the urpose' of engaging the arms 7 and 8 of the coking plates 3.

It will be understoodithat after the cage has been lowered or passed below agiven door the lockin plate willassume the posi tion shown at the upper door of Fig. l, and

when the cage has moved upward and above a given door the locking plate will assume the position shown at the bottom of Fig. 1, and when the elevator cage is brought into the same plane with a given floor the locking plate will be in the position shown in Fig. 3, and the positionshown in Fig. 1, the center locking plate shown in Fig. 1 illustrating its position when the doorlocking plate is rought into the position to release the cage locking device.

Within the wall of the elevator shaft and out of the way ofthe cage, is 'ournaled the shaft 7 the top or upper endo which is provided with an L-shaped lever 8*, one arm of said' lever being provided with spaced arms adapted to on age the pin 10, which pin is secured to-the oor in any convenient manner and will engage the spaced arms 11 when the door is opened and closed, thereby rocking the L-shaped lever 8*, but it will be understood that the l.shaped lever will not be permitted to rock. unless the opposite locking plate 3 is brou ht into such a position that the notch 4 wil register with the arm 12,'at

which time the door can be opened and closed, and when the door is opened or brought into the position illustrated in F ig. 3, the cage will be locked againstmovement either up or downcby reason of the arm 12 passing through the slot 4 and on top of the cage floor 2, which locks the cage against any upward movement, and for the purpose of locking the cage against downward movement, the lower arwle arm 1.2 is provided, which arm is )refera ly formed integral with the shaft 7 thereby locking the rage against in ovoinent in both directions.

When the door has been closed or brought into the osi tion illustrated at the top and bottom 0 Fig. 1, the L shaped lever 8? and the angled arm will be moved so as to be disengaged from the cage floor and when the ca e is moved in either direction the pin 6 will rock the plate 3, so as to throw the slot out of alihement at which time-the door is locked against any movement of the arm 12, owing to the fact that the L shaped lever 8 cannot be moved iy reason of the arm 12 striking the plate 3, by wl'iich arrangement there can be no accidental movement of the cage when the door is opened nor can any ivendoor be opened until the cage floor 2 is brought into the 831110 plane with the various floors of the building and stopped.

For the urpose of reventing any LC-Ch dental displacement oi; the locking plate 3 after it has been set to lock the 5. shaped lever and the angled arm 13 against movement the s )ring 14 is provided, which spring is secure to the Wall of the elevator shaft in any convenient manner and is provided with the curved portions 15, which engage the recesses 5 of the locking )littGS 3 when said locking plates are rocked in either direction. For the urpose of providing room for the pin 10 the 001' of the building is provided with the slot or way 16.

In Fig. 1 the controlling rope 1 is shown in dotted lines, which controlling rope is connected and operated in the usual manner, but has no specific reference to the present invention, except a controlling rope inust necessarily be used.

Having fully described my invention What {claim as new and desire to secure by Letters Patent, is-

1. In a safety device for elevators, an elevntor cage, and a door, a pivoted door locking plete provided With recesses upon opposite sides of its pivotal point, a shaft provided with an L-shsped lever, one of the arms of the L-sheped lever adapted to pass through one slot of the door locking plate, and means carried by the elevator door and the elevator cage to actuate thelockingplate and the L.- shaped lever, substantially as and for the purpose specified.

2. In a safety device, the combination of an elevator cage, and ii door, piroled plate located in the elevator Sllill'i, ineiins curried by the rage adapted to :icinzitc the piwicd plate, an L-shapcd lever, one :n'ni oi Hilll lo ver adapted for engagement with the pix Mimi plate and the other arm ol siiid lever odupird to be actuated by the elerziti'n' door, f-liliil plate provided with :i recess adapted in release the L-slnipcd lever, substantially as and for the purpose specil iedl 3. in a safety device for elevators, the combination of an elevator wige :llHl J door. ii pivoted locking plate locnicd in the shot? of the elevator near the elevator door, siiid phito providcd with spared lIlllS, nioznis curried hy the cage adopted to engage the zirnis ol the locking plate, cage locking derives, and means carried by the door ridzi )ittl to ectonte the cage locking devices, sii islsntiiilly in; and for the purpose specified.

4. In safety device for elevators, the combination of an elevator age and .-i door, a, pivoted locking phrte located in the shit, said plate provided with spin-ed :ll'lllH. inrzins carriel by the (age adapted to on go [he will arms of the locking phite, cage locking; devices, means carried by the door ZHlElIilMi to actuate the cage locking devices, itllkl :i spring); z'nhiptcd to engage the pivoted locking: phiio, substantially as and lor the purpose spci'ilii-d. In testimony that I claim the whom. i. have hereunto subscribed niy ninnc in the presence of two witness s.

ANDREW i lUl ll Phil .l i itncsses J. A. Jsrrnns, F. WJBonn. 

